Fireproof door.



- 'PATENTED JULY 28, 1908. REBNER. I PIREPROOF DOOR. APPLICATION FILED MAY 7 L'M I N" I 1 UNITED STATES PATENT OFFICE.

PETER EBNER, OF COLUMBUS, OHIO.

FIREPROOF DOOR.

- of the United States, residing at Columbus, in

the county of. Franklin and State of Ohio, have invented certain new and useful Improvements in Fireproof Doors, of which the 1 following is a specification.

My invention relates to the improvement of fire-proof doors of that class which are adapted to be used in building construction and the objects of myinvention are to provide an improved construction of metallic fire-proof door 'which will tend to resist the actioitof heat to so construct my improved door to prevent the same from twisting or warping when subjected to a high temperature; to provide improved meansfor supporting a glass panel therein and to produce other improvements the details of which will be more fully pointed out hereinafter. These objects I accomplish in the manner illustrated in the accompanying drawing, in which: a

Figure 1 is a view in elevation of my improved door, Fig. 2 is a central vertical sec tion on line az-w of Fig. 1, Fig. 3 is a transverse section on line y-y of Fig. 1, Fig. 4 is a view in perspective of one of the end filling members which I employ in the manner hereinafter being shown in illustration, Fig. 5 is an enlarged sectional view on line a-a of Fig. 1, and, Fig. 6 is a sectional view r'presenting an enlargement of the lower end of Fig. 2.

described, said filling member Similar numerals refer to similar parts throughout the several views.

In carrying out my invention, I employ two opposing door facing plates 1 and 2 of sheet metal, these plates having their longer edges rovided with flanges 1 and 2 which extend at right angles with the faces of the plates, the flange 2 terminating in an inwardly projecting hook 2 which is engaged by a hook tongue 2 formed throughout the length of the flange 1. In the lower half of each of the plates 1 and 2 is formed a panel depression and these opposing panels which are indicated at 3 and 4 are separated only by a sheet of asbestos 5, said panel ortions and asbestos separated sheet being 0 osely united by metallic rivets 6.

In the upper half of the door, the opposing plates 1 and 2 are cut away to form suitable sized panel openiz igs 7 and about each of these openings said metal plates are stamped Specification of Letters Patent.

broken for the sake of clearness Patented July 2a, 1908.

Application filed May 7, 1908. Serial No. 431,448.

or pressed to form a frame, said frame portion being provided with miter cuts at 1ts corners to produce upper and lower frame ,tongues 8 and side frame tongues 10. Be-

tween the door sections or plates 1 and'2and about the openings 7, I provide a metal frame, the sides and ends of which comprise as indicated at 9-, channel shaped bars, the side flanges of which are formed throughout their lengths with inturned hoolf lips 9. The depressed frame tongues 8 and 10 are as indicated more clearly in Fig. 5 of the draw ing, bent inward upon themselves said inturned members which indicated at 8 being of greater depth than the members 8 and having their edge portions terminating in hooks 11 which engage the inturned hook projections 9 of the frame sections 9. The inturned frame tongue members 8 embrace, as shown, opposite faces 12 which form a complete frame about the openings 7 of the plates 1 and 2. The inner edges of these frame bars are recessed as indicated at 13 to receive the marginal portions of a glass door plate 14.

As indicated more clearly in Fig. 6 of the drawing, I form the lower end or edge portion of each of the plates 1 and 2 with an inturned double hook 15 which are engaged by inturned hook terminations 16 of the downturned side flanges of a channel plate 16 which extends between the plates 1 and 2 in the lower portion of the door. The space between the hook members 15 is closed by an elongated box-like member 17 and the underside of which is flush with the underside of the inturned hook members'15 of the plates 1 and 2. Said plates may be united with the channel member hooks 16 the hooks 15 and side walls of the member 17 by screws or other fastening devices 18. For the sake of clearness in illustration, but one of these screws is shown in the drawing, the same being indicated in Fig. 6 thereof.

As prescribed for the lower end of the door, the upper ends of the plates 1 and 2 are as indicated at 19, bent inwardly to form double hooks which are engaged by the hook terminations 20 of a channel bar 20 corresponding in position and arrangement with the chainiel bar 16 at the lower end of the door, with the exception that said channel bar 20 has formed therein a central slot through which the upper end of the glass plate is projects within a filling bar 21 corof wood frame bars lower filling bar 17. It will also be observed that the upper wood frame bar 12 which corresponds, is separated centrally in two sections so as to permitlof the passage theretllirough of the upper portion of the glass ate. p From the construction described it will be observed that the only inflammable material employed in my improved door are the wood frame pieces 12 which cushion the' glass plate 14; and. which are so incased by metal as to prevent their being readily affected by external heat. It will'also be observed that the formation of the de pressed panel in the lower half of the door, which results in the drawing together of the plates 1 and 2, will in conjunction with the structure described, operate to impart great strength to the door and prevent the same from being readily warped or twisted by the action of heat. The tendency of the door to warp is further obviated by the fact that with the exce tion of those portions of the door occupie by the lower panel and the upper glass panel, an air space is formed between the two faces of the door.

Although no means of hinging or looking my improved door are shown or described herein, it will be understood that suitable metallic devices for these purposes may be employedin connection therewith.

What I claim, is: v 1. In a fireproof door, the combination I with two opposing metal door plates, said plates having inturned hook terminations at their upper and lower ends and having edge flanges formed with engaging hooks, metallic eeaeva door plates, and metallic filling pieces be- I tween the iiiturned hook terminations of said door plates.

2. In a fireproof door, the combination of two opposing metallic plates, each of said plates having a -panel depressed therein, said depressed panel portions being riveted one to the other, channel pieces 16 and 20 extending between the lower and upper portions of the door plates,and having hook terminations which engage hook terminations of said door plates, and filling bars between the hook portions of said plates.

3. In a fireproof door, the combination of two metallic door plates having their longer edges flanged and united, said plates having oppositely located openings in their upper portions and inwardly bent frame tongues formed in said plates about said openings, said tongues being turned inwardly and formed with terminal hooks, a metallic channel frame having its sides hooked into engagement with the hooks of said frame tongues, wood members embraced by said tongues, and a glassplate having its mar-' ginal portions eml'zraccd by said weod memers.

In testimony whereof I afiiX my signature in presence of two witnesses.

PETER EBNER. Witnesses a L. CARL STOUGHTON, A. L. PnnLrs. 

